.go_back{
    width: 40px;
    height: 40px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    position: fixed;
    left: 10px;
    top: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999;
}
.wapper{
    width: 90vw;
    height: 80vh;
    position: fixed;
    left: 50%;
    top: 55%;
    transform: translate(-50%,-50%);
    box-shadow: 0 0 20px 0 #ccc;
    padding: 20px;
    box-sizing: border-box;
    border-radius: 7px;
}